I NEED ANSWERS ASAP ASAPJeanette applied the associative property to (4 + 2) + 3 = 9. Which of the following might she have used?

2 + 4 + 3 = 9
4 + (2 + 3) = 9
3(4 + 2) = 9
(2 + 4) + 3 = 9

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck